Ball valve
(liquid side)
For
φ
28.6mm gas pipe, directly
connect to Tri-joint; For
φ
34.9mm
gas pipe, add a reducer and a
transition pipe
C
o
n
n
e
c
t
p
i
p
e
t
o
i
n
d
o
o
r
u
n
i
t
s
φ
28.6mm a transiton pipe
(only for
φ
34.9mm gas pipe)
C
D
Tri-jiont
A >10mm
B >200mm
C >500mm
D>100mm
G
a
s
p
i
p
e
Elbow
L
i
q
u
i
d
p
i
p
e
B
a
l
a
n
c
e
p
i
p
e
B
To balance pipe
access valve
To units ball valve
To units ball valve
Main and slave units must be
installed in the same level
Access valve for
balance piping (φ9.52)
Ball valve (gas side)
R
e
m
o
v
e
t
h
e
p
a
n
e
l
Knock-out-hole
Knock-out-hole
Piping connection position
A
Knock-out-hole
(for connecting balance pipe)
Note：Outdoor unit transportation shall be very careful;
Do use special rope to tie the units for transportation;
Do not touch the fins of units to avoid hurt of hand;
Do keep the plastic bag from the child;
4.4 Outdoor unit Installation
● To use the solid base or supporter, considering the strength of the floor and drainage and piping layout;
● To screw bolt to fix the 4 corner of unit, to avoid the impact of strong wind and earthquake;
● To stop the vibration transfer, to take some measure to stop it , such as rubber and vibration absorber;
Warning：
：：
：
● Installation ground and base shall be strong enough;
5 Installation of the combined outdoor units
（
（（
（Suitable for Model of MDS260~320）
））
）
Two outdoor units can be grouped as one outdoor unit, to couple with multi-indoor units; Grouped outdoor units installation is more
complicated than that of the single outdoor unit; please read the below notes carefully before installation;
5.1 Select the position of the installation for outdoor unit
Select one unit as the main unit, the other one as the slave unit; and two units shall be positioned in the same level side by side;
● Main unit and slave unit shall be installed in the same level;
● The distance between main and slave unit shall be more than 10mm ;
5.2 Piping connection of the outdoor units
Accessory copper parts are packed with the outdoor units; piping connection includes gas, liquid and balance piping connection between
the main and slave units; all piping shall be with insulation material and avoid any damage of this insulation material;
5.2.1 Gas and liquid piping connection
● Gas and liquid piping connection with the units, please refer to the concerned chapter of “ installation of refrigeration piping”;
Gas and liquid piping shall be connected paralleled, shown as below. The dimensions of the straight pipe connected to the Tri-joint must
meet the requirements below;
Unit model
Absorber quantity
Absorber SPEC
280
×
180
×
15mm
MDS080~150
4
Rubber absorber
6
MDS180~240
8
MDS260~320
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